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What type Solder for soldering threaded rod to brass
coupler ??

Thanks for your help.

Bob

Silver solder is best, but I have always used electrical solder and never had a failure in over 40 years

Ideally, you would use silver solder, but many report no problems using standard electrical solder. Regardless which you use, I think the most important thing is clean parts and a good mechanical joint.

Thanks guys for the info, I have Rosin Core
and Acid core and some Radio shack solder in
my shop. Thanks again!!!

Bob

I use rosin core solder electrical (lead-tin alloy) solder which holds ok. The problem comes when both connections are not cleaned properly so the solder does not flow. If it beads up, it's not a good conection.. in fact, it's not a connection at all. It has to flow into the joint for the solder joint to be secure.

Silver solder requires more heat than lead-tin soldering does. The differences in strength are obvious, but it is not necessary in most applications to have a joint that is that secure that you need silver to make it so. Most lead-tin soldering will not get the parts heated up to glowing red where silver solder will.

CGr.

I too have used both with good results either way. I kind of like the peace of mind of silver solder and since I have it I will use it.
After soldering wash off the parts real good, some fluxes will cause the metal to rust if not cleaned off.

Thanks for the help.

Bob

I have a hunch that when the above says "silver solder" they really mean silver bearing solder such as StayBrite. True silver solder requires a great deal more heat and necessitates a torch, not iron. Silver bearing solder does require slightly more heat than regular solder but does use an acid flux so you need to clean the joint well after soldering as well as before else you will soon have a lot of corrosion. For most RC use, regular electical solder with rosin flux will do fine although it is sometimes easier to make good solder joint on music wire using an acid flux, again scrubbing well after as well as befor soldering.

ok, I normaly use solder and flux, it definately helps to clean the joint, I use 60 grit sand paper, to scuff the surface, after that, I flux the wire to solder, tin it, and proced to solder the joint, with a fair amount of solder. In all the joints I have made, they have held up fine, if you don't flex it much, it should last a bit[8D]

No, I meant silver solder... with a torch. That's why I mentioned heat requirements when I discussed it.

CGr.

By "torch" these people are referring to an acetylene type torch.

The propane type torch doe s not get hot enough

A MAP Gas torch will sometimes work on something light